this is the commented version of my previous entry (solution 181910)
this is my original submission modified for ease of reading
whoops, didn't see your thing about "easy to understand code."
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Scoring for oriented dominoes
Divisors of an integer
Who is the smartest MATLAB programmer?
frame of the matrix
Getting the indices from a vector
Project Euler: Problem 1, Multiples of 3 and 5
Project Euler: Problem 10, Sum of Primes
Project Euler: Problem 9, Pythagorean numbers
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